Window Techs offers fire curtains systems for enhanced fire protection. Safeguard your property with our reliable and certified fire curtains. Fire And Smoke Curtain System Manufacturers & Suppliers in Faridabad India. A fire curtain is a highly robust fire-resistant material. In the event of a fire, the curtain is released by a trigger from a fire alarm or local smoke detector, which allows it to descend vertically by gravity and obscure the space, doorway or lift shaft above which it is located. Once deployed, the role of a fire curtain is crucial for the prevention of flames spreading either laterally or vertically, acting as a physical barrier between the fire and the escape routes to be used by occupants in the evacuation of the building.